Schelling — the complete, unedited output of the deterministic mcptrustchecker engine v1.13.0, scanned . Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.
{
"tool": {
"name": "mcptrustchecker",
"version": "1.13.0",
"methodologyVersion": "mcptrustchecker-1.13"
},
"target": {
"id": "@schelling/mcp-server",
"source": {
"kind": "package",
"origin": "@schelling/mcp-server"
},
"server": {
"name": "@schelling/mcp-server"
}
},
"grade": "A",
"score": {
"score": 93,
"threatScore": 100,
"grade": "A",
"band": "A",
"categorySubtotals": {
"injection": 0,
"exfiltration": 0,
"permissions": 0,
"supply-chain": 0,
"network": 0,
"hygiene": 0
},
"vector": [
{
"kind": "client",
"term": "capability-exposure",
"level": "high",
"label": "capability blast radius (high) — client exposure if the model is manipulated",
"appliedPenalty": 6
},
{
"kind": "client",
"term": "verification-discount",
"level": "repo",
"label": "publisher verification (public source) — no provenance, but the source is public and inspectable",
"appliedPenalty": 1
},
{
"kind": "client",
"term": "coverage-honesty",
"level": "source",
"label": "inspection depth (source) — how much of the target the scan could see",
"appliedPenalty": 0
}
],
"gatesFired": [],
"methodologyVersion": "mcptrustchecker-1.13"
},
"capability": {
"level": "high",
"reasons": [
"ingests untrusted external content (a prompt-injection entry point)",
"can execute shell commands or code"
],
"tags": [
"untrusted-input",
"code-exec"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (57 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, scan the running server: --command \"npx -y <package>\"."
]
},
"findings": [
{
"ruleId": "MTC-SRC-001",
"title": "Dynamic code execution in server code (dist/index.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/index.js:2874`): Evaluating strings as code is the most direct RCE primitive; if any tool input reaches it, the server executes attacker-chosen code. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.",
"remediation": "Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.",
"location": {
"kind": "server",
"name": "dist/index.js"
},
"evidence": "const makeValidate = new Function(`${names_1.default.self}`, `${names_1.default.scope}`, sourceCode); const val",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-001",
"file": "dist/index.js",
"line": 2874,
"nonRuntime": false
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "schelling.describe",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.server_info",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.clusters",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"browse\""
]
}
},
{
"tool": "schelling.cluster_info",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.onboard",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.register",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.update",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.refresh",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.quick_seek",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.quick_offer",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.quick_match",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.search",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.interest",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.commit",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.connections",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.decline",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.reconsider",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.withdraw",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.report",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.pending",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.message",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.messages",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.direct",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.relay_block",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.inquire",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.contract",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.deliver",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.accept_delivery",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.deliveries",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.event",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.subscribe",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.unsubscribe",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.notifications",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.reputation",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.dispute",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.jury_duty",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.jury_verdict",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.verify",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.register_tool",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.list_tools",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.tool_invoke",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.tool_feedback",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.my_insights",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.analytics",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.export",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.delete_account",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.marketplace_register",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.marketplace_update",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.marketplace_search",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.market_rates",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.negotiate_start",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.negotiate_respond",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.negotiate_status",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.stripe_onboard",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.wallet_topup",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.wallet_balance",
"tags": [],
"reasons": {}
},
{
"tool": "schelling.payout_request",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "b0101d2f8f81a10af0cef4ba8af8eab15af1988e2a36ce80126751cb4df3657e",
"stats": {
"tools": 57,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 1,
"medium": 0,
"low": 0,
"info": 0
}
}
}